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US 9,309,996 B2Granted
Delivery tube for irrigation and fertilization system and method for manufacturing same
AssigneeResponsive Drip Irrigation, LLC
InventorsJanice K Gould, David A Conklin
Life of this patent
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Abstract
The invention is directed generally to improvements in irrigation and fertilization assessment and delivery. More specifically, embodiments of the invention provide an improved fluid delivery tube, method to manufacture such tube, and systems that include such tube. The delivery tube is beneficial at least because it minimizes the life cycle cost of a plant-responsive delivery tube.
Claims21
A delivery tube, comprising:
- a substrate, a portion of the substrate being treated with a hydrophilic polymer;
- a backer coupled to the substrate, the delivery tube being configured such that the substrate and the backer are each disposed along a functional length of the delivery tube, a lumen of the delivery tube being formed between at least a portion of the substrate and at least a portion of the backer,
- wherein the substrate is connected to the backer at a first weld area and a second weld area, the first and second weld areas extending over the functional length of the delivery tube;
- and
- wherein the portion of the substrate being treated with the hydrophilic polymer excludes the first and second weld areas.
2 more elements
Dependencies are inferred from the claim text.